2123044323421 has 8 divisors (see below), whose sum is σ = 2426385459584. Its totient is φ = 1819715459760.

The previous prime is 2123044323403. The next prime is 2123044323479. The reversal of 2123044323421 is 1243234403212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123044323421 - 2¹¹ = 2123044321373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123044323721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2694390 + ... + 3392023.

It is an arithmetic number, because the mean of its divisors is an integer number (303298182448).

Almost surely, 2^{2123044323421} is an apocalyptic number.

It is an amenable number.

2123044323421 is a deficient number, since it is larger than the sum of its proper divisors (303341136163).

2123044323421 is an equidigital number, since it uses as much as digits as its factorization.

2123044323421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6136251.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 2123044323421 its reverse (1243234403212), we get a palindrome (3366278726633).

The spelling of 2123044323421 in words is "two trillion, one hundred twenty-three billion, forty-four million, three hundred twenty-three thousand, four hundred twenty-one".